/*
 * @Description:身份证校验规则.
 * @Version: 1.0
 * @Author: Nydia
 * @Date: 2020-06-28 19:02:19
 * @LastEditors: Nydia
 * @LastEditTime: 2020-06-29 08:36:09
 */
//在js文件中写一个身份校验的方法，在需要身份校验的vue组件中导入这个js文件，调用暴露出去的校验方法。传入的参数为用户输入的身份证号
//校验身份证号
export function isIdentityId(identityId) {
  if (identityId ==null || identityId=== '') {
    errorMsg = "身份证号不能为空";
    return errorMsg;
  }
  var patrn = /(^\d{15}$)|(^\d{17}(\d|X|x)$)/;//长度或格式校验
  //地区校验
  var aCity = {
    11: "北京",
    12: "天津",
    13: "河北",
    14: "山西",
    15: "内蒙古",
    21: "辽宁",
    22: "吉林",
    23: "黑龙江",
    31: "上海",
    32: "江苏",
    33: "浙江",
    34: "安徽",
    35: "福建",
    36: "江西",
    37: "山东",
    41: "河南",
    42: "湖北",
    43: "湖南",
    44: "广东",
    45: "广西",
    46: "海南",
    50: "重庆",
    51: "四川",
    52: "贵州",
    53: "云南",
    54: "西藏",
    61: "陕西",
    62: "甘肃",
    63: "青海",
    64: "宁夏",
    65: "新疆",
    71: "台湾",
    81: "香港",
    82: "澳门",
    91: "国外"
  };


  // 出生日期验证
  var sBirthday = (
      identityId.substr(6, 4) +
      "-" +
      Number(identityId.substr(10, 2)) +
      "-" +
      Number(identityId.substr(12, 2))
    ).replace(/-/g, "/"),
    d = new Date(sBirthday)
  // 身份证号码校验 最后4位  包括最后一位的数字/字母X
  var sum = 0,
    weights = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2],
    codes = "10X98765432";
  for (var i = 0; i < identityId.length - 1; i++) {
    sum += identityId[i] * weights[i];
  }
  var last = codes[sum % 11]; //计算出来的最后一位身份证号码

  var errorMsg = '';
   if (!patrn.exec(identityId)) {
    errorMsg = "你输入的身份证长度或格式错误"
  } else if (!aCity[parseInt(identityId.substr(0, 2))]) {
    errorMsg = "你的身份证地区非法"
  } else if (sBirthday != d.getFullYear() + "/" + (d.getMonth() + 1) + "/" + d.getDate()) { errorMsg = "身份证上的出生日期非法" } else if (identityId[identityId.length - 1] != last) {
    errorMsg = "你输入的身份证号非法"
  }
  return errorMsg;
}

export function validateAge(age) {
  var errorMsg = '';
  if(age==null || age===''){
    return errorMsg;
  }

  var pattern=/^([0-9]{1,2}|100)$/;
  if(!pattern.test(age)){
    errorMsg="年龄值不对";
  }
  return errorMsg;
}
//根据身份证获取出生日期
export function getBirth(idCard) {
  var birthday = "";
  if(idCard != null && idCard != ""){
    if(idCard.length == 15){
      birthday = "19"+idCard.slice(6,12);
    } else if(idCard.length == 18){
      birthday = idCard.slice(6,14);
    }
    birthday = birthday.replace(/(.{4})(.{2})/,"$1-$2-");
    //通过正则表达式来指定输出格式为:1990-01-01
  }
  return birthday;
}

/**
 * //根据身份证获取性别
 */
export function getSex(idCard) {
  var sexStr = '';
  if (parseInt(idCard.slice(-2, -1)) % 2 == 1) {
    sexStr = 1;
  }
  else {
    sexStr = 2;
  }
  return sexStr;
}
//根据身份证获取年龄
export function getAge(identityCard) {
  var len = (identityCard + "").length;
  if (len == 0) {
    return 0;
  } else {
    if ((len != 15) && (len != 18))//身份证号码只能为15位或18位其它不合法
    {
      return 0;
    }
  }
  var strBirthday = "";
  if (len == 18)//处理18位的身份证号码从号码中得到生日和性别代码
  {
    strBirthday = identityCard.substr(6, 4) + "/" + identityCard.substr(10, 2) + "/" + identityCard.substr(12, 2);
  }
  if (len == 15) {
    strBirthday = "19" + identityCard.substr(6, 2) + "/" + identityCard.substr(8, 2) + "/" + identityCard.substr(10, 2);
  }
  //时间字符串里，必须是“/”
  var birthDate = new Date(strBirthday);
  var nowDateTime = new Date();
  var age = nowDateTime.getFullYear() - birthDate.getFullYear();
  //再考虑月、天的因素;.getMonth()获取的是从0开始的，这里进行比较，不需要加1
  if (nowDateTime.getMonth() < birthDate.getMonth() || (nowDateTime.getMonth() == birthDate.getMonth() && nowDateTime.getDate() < birthDate.getDate())) {
    age--;
  }
  return age;
}

